DETROIT, March 7 /PRNewswire-FirstCall/ -- Comerica Incorporated (NYSE: CMA) will host an Investor Day on Thursday, March 9, 2006, at The St. Regis, located at Two East 55th Street at Fifth Avenue in New York City. Presentations will begin at 8 a.m. and conclude at 12:00 p.m.

(Logo: http://www.newscom.com/cgi-bin/prnh/20010807/CMALOGO )

Presenters will include Ralph W. Babb Jr., chairman and chief executive officer, and other members of the Comerica management team.

Members of the professional investment community are invited to attend the event. The general public is invited to participate via a live Webcast, which will be available at http://www.comerica.com/2006investorday . The Investor Day agenda and presentation materials also will be available at the site.

The audio portion of the presentations may be accessed by calling (800) 309-1256 (domestic) or (719) 785-9443 (international). The passcode is 7764279. Audio and Webcast replays will be available approximately four hours following the event through June 9, 2006. Audio replays may be accessed at (888) 203-1112 (domestic) or (719) 457-0820 (international, not a toll-free call). The replay passcode is 7764279. Webcast replays may be accessed at http://www.comerica.com/2006investorday .

Comerica Incorporated is a financial services company headquartered in Detroit, strategically aligned by three business segments: The Business Bank, The Retail Bank, and Wealth & Institutional Management. Comerica's approximately 10,800 employees focus on relationships, and helping people and businesses be successful. Comerica Bank locations can be found in Michigan, California, Texas, Arizona and Florida, with select businesses operating in several other states, Canada and Mexico. Munder Capital Management and Comerica Securities are investment services affiliates. Comerica reported total assets of $53.0 billion at December 31, 2005. To receive e-mail alerts of breaking Comerica news, go to http://www.comerica.com/newsalerts .

SOURCE: Comerica Incorporated

CONTACT: Media Contacts: Sharon R. McMurray, +1-313-222-4881, Wayne J.
Mielke, +1-313-222-4732, or Investor Contacts: Paul E. Burdiss,
+1-313-222-2840, Paul Jaremski, +1-313-222-6317, all of Comerica Incorporated

Web site: http://www.comerica.com/
http://www.comerica.com/2006investorday